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Definitions

mainframe

[meyn-freym] / ˈmeɪnˌfreɪm /
NOUN
central processing unit
Synonyms






Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“The idea of shifting off of mainframe is not a new concept,” Daryanani concluded.

From Barron's • Feb. 24, 2026

But IBM’s z17 mainframe has still proved popular, Daryanani added, with customers seemingly gravitating toward benefits like 100% uptime, quality encryption and cost efficiencies.

From MarketWatch • Feb. 24, 2026

In his view, although alternatives have been available for decades, clients are sticking with mainframe for a host of reasons: reliability and speed advantages, better cost efficiency at scale, and security such as quantum-safe encryption.

From Barron's • Feb. 24, 2026

“Software and mainframe performance supported strong results for what many consider a defensive name,” said JPMorgan analyst Brian Essex, who rates the stock a neutral.

From MarketWatch • Jan. 29, 2026

Despite Mother’s “get out of jail free” card, she was still determined to climb the wall and hack into the company’s mainframe.

From "City Spies" by James Ponti